Fuel injectors

[DruDown720]

What would be an upgrade from the factory frontier fuel injectors? Now I have been told that I can use the Altima or the sentera is this true?

[ggzilla]

Nissan Sentera injectors are no good for an upgrade. The GA16DE injectors are too small, and the SR20DE injectors are too big. Unless you have a V6 Frontier.

[DruDown720]

What if the motor that's was in the Altima was a ka24de are throes injectors the same as the truck ?

[paradime]

Why are you upgrading your injectors? Or should I say what upgrades have you made to your motor?  You cant just slap on bigger injectors and expect it to give you more power. Unless you've doing something to your ECU's fuel mixture, cam, valve train, intake, and or exhaust there's no benefit. in fact it could harm your performance.

 

You can also get more fuel by increasing fuel pressure with an adjustable regulator for less money.

[ggzilla]

That is the question.

[datzenmike]

Fuel is fuel and is likely supplied in the correct amount and ratios. IF... you were to dramatically increase the amount  of air the motor uses, such as adding a turbo or SC then the factory fuel delivery may not be able to keep up. Then a  larger injector and on higher capacity fuel pump might be justified.

[paradime]

When you increase hp in any engine you increase the amount of mixture flowing through the motor, and you need injectors big enough to accommodate that HP. A 180cc injector will accommodate say 160ph. You install a high flow head, high lift cam, and free flowing exhaust to produce 240hp you will need bigger injectors. You can calculate proper injector size for a specific motor application with this http://www.promracing.com/injector.php/

 

 

 Fuel pressure modification like I mentioned before:

 

By changing your fuel pressure, you can change the flow rates of your injectors. For example: An injector that flows 330 cc @ 40 psi will flow 369 cc @ 50 psi.